const wxuuid = function () {

  var s = [];

  var hexDigits = "0123456789abcdef";

  for (var i = 0; i < 36; i++) {

    s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);

  }
  s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010

  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01

  s[8] = s[13] = s[18] = s[23] = "-";

  var uuid = s.join("").replace("-","");

  return uuid

}

//一定要在这里面注册，否则没有用

module.exports = {

  wxuuid: wxuuid

}